diff options
Diffstat (limited to 'libexec/casper/random/random.c')
-rw-r--r-- | libexec/casper/random/random.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/libexec/casper/random/random.c b/libexec/casper/random/random.c new file mode 100644 index 0000000..db91685 --- /dev/null +++ b/libexec/casper/random/random.c @@ -0,0 +1,82 @@ +/*- + * Copyright (c) 2012-2013 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Pawel Jakub Dawidek under sponsorship from + * the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/nv.h> + +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +#include <libcapsicum.h> +#include <libcasper.h> +#include <pjdlog.h> + +#define MAXSIZE (1024 * 1024) + +static int +random_command(const char *cmd, const nvlist_t *limits, nvlist_t *nvlin, + nvlist_t *nvlout) +{ + void *data; + size_t size; + + if (strcmp(cmd, "generate") != 0) + return (EINVAL); + if (!nvlist_exists_number(nvlin, "size")) + return (EINVAL); + + size = (size_t)nvlist_get_number(nvlin, "size"); + if (size == 0 || size > MAXSIZE) + return (EINVAL); + + data = malloc(size); + if (data == NULL) + return (ENOMEM); + + arc4random_buf(data, size); + + nvlist_move_binary(nvlout, "data", data, size); + + return (0); +} + +int +main(int argc, char *argv[]) +{ + + /* + * TODO: Sandbox this. + */ + + return (service_start("system.random", PARENT_FILENO, NULL, + random_command, argc, argv)); +} |